1.MybatisSqlSessionFactoryBean中添加分页插件

// 关键代码 设置 MyBatis-Plus 分页插件
MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
Interceptor[] plugins = {interceptor};
factoryBean.setPlugins(plugins);

完整配置

public SqlSessionFactory sqlSessionFactory(@Qualifier("dynamicDataSource") DynamicDataSource dynamicDataSource) throws Exception {
    MybatisSqlSessionFactoryBean factoryBean = new MybatisSqlSessionFactoryBean();
    factoryBean.setDataSource(dynamicDataSource);
    factoryBean.setTypeAliasesPackage("com.xxx.entity");
    factoryBean.setTypeAliasesPackage("com.xxx.**");
    // 设置mapper.xml的位置路径
    Resource[] resources = new PathMatchingResourcePatternResolver().getResources("classpath:mapper/*.xml");
    factoryBean.setMapperLocations(resources);
    factoryBean.setConfigLocation(new ClassPathResource("configuration/mybatis-config.xml"));

    // 关键代码 设置 MyBatis-Plus 分页插件
    MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
    interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
    Interceptor[] plugins = {interceptor};
    factoryBean.setPlugins(plugins);

    return factoryBean.getObject();
}

没有手动配置数据源时,可以使用下面简单配置

    /**
     * 分页插件
     */
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }

2.使用

Page<XXX> xxxList = xxxMapper.selectPage(
        new Page<>((dto.getPageNum() - 1) * dto.getPageSize(), dto.getPageSize()),
        Wrappers.lambdaQuery(XXX.class).eq(XXX::getDeleteFlag, 0)
);